Tension-controlling device.



S. W. WARDWELL. TENSION CONTROLLING DEVICE.

APPLICATION FILED MAR 3. 1908.

Patented Feb. 15, 1910.

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TENSION CONTROLLING DEVICE.

APPLICATION FILED MAE. 3. 1908.

949,407. Patented Feb. 15, 1910.

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SIMON WARDWELL, OF PROVIDENCE, RHODE ISLAND.

TENSION-CONTROLLING DEVICE.

Specification of Letters Patent.

PatentedFeb. 15, 1910.

Application filed March 3, 1908. Serial No. 419,000.

To all whom it mayconcern:

Be it known that I, SIMON- W. WARDWELL, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Tension-Controlling Devices, of which the following is a specification.

My invention relates to tension devices for winding machines, for automatically controlling and varying the degree of tension applied to the yarn in windin My improvement is especially adapted to winding filling bobbins, quills or shuttle cops, in which the yarn is wound in conical layers to form the tapering nose of the co and the object of my invention is to provi c for winding with maximum tension at the' apex of the cone and with decreasing tension as the yarn traverses toward the base of the cone, to add stability to the yarn mass.

My invention is fully described in the following specification,illustrated by the accompanying drawings, in which Figure 1 is a front elevation of a portion of the winding machine, showing m'y device applied thereto, in part section on the line a-'a of Fig. 2, looking in the direction indicated by the arrow; Fig. 2, a side elevation of the same; Fi 3, a plan view of the device, in detail; igs. 4, 5, 6 and 7, detail views of the parts.

' I have shown my invention applied to a machine of the character described in my pgnding application,'Serial No. 418,998, filed arch 3rd,-1908 but it will be obvious that the device is equally well adapted to any style of machine for producing ta er-ended quills, cops or bobbins. These bo bins are for use in cloth looms, and contain the weft or fillin which is'delivered from the shuttle as the atter is thrown across the 100m in weaving. It is necessary to have a free, unrestricted delivery from the shuttle, otherwise the quick draft on the yarn will cause breaks, which limit production, make waste, and spoil the quality of the fabric. The object in laying the yarn with ashort traverse, as com ared with the lengthof the bobbin, and building the bobbin w1th a tapered nose is, of course, to provide for the greatest freedom in delivery, but in practice, several defects have been found in this style' of bobbin.

Previous to my invention, in all machines designed for producing shuttle bobbins, the yarn is wound with very little tension, so that the coils are loose and the bobbin soft and unstable. In handling, the end coils at the apex of the cop become loosened and slough off, causing snarling and tangling. The dis laced coils must be pulled oif before the bob in can be used, and much yarn is thus wasted by the operator. Again, the ar and shock of the shuttle at the ends of its throw across the loom, often loosens the'yarn from the bobbin and the coils become snarled and clog the eye of the shuttle. This results in frequent breaks in the filling, with consequent loss of time and material. To correct this defect, I have found, after considerable experimenting, that, if the coils of yarn at the apex or point of the cop are wound with increased tension, they Wlll remain in. place and give greater stability to the nose of the bobbin, thus preventing slough-offs. It is ointed out, however, that it is not desirab e to wind the yarn at the base of the cone (at the. greatest diameter of the bobbin) with extreme tension, because the constriction of the outer coils would be liable to cause the dis lacement of the inner ones, and the nose 0 the cop would bulge, making the cop deformed and useless.

The means for augmenting the tension on the yarn while the latter is being wound on the apex of the bobbin is the principal feature of'the present invention, and will now be described.

In Fig. 1, A is the from which projects adapted to rotate in the bearingh driven from suitable gearing or ot er connections not here shown. The traverse-bar or rod d extends from the frameA parallel with the spindle b and is adapted to reciprocate in bearings e and f, the latter formed in a bracket 9 attached to the frame A. The traverse-rod d is reci rocated from an arm 71 on the rocker sha t 1', through the connecting link 9', as described in my pending application above referred to. The traverse-rod d is threaded, and engaging the thread is a nut is, on which is mounted a wheel Z adapted to contactwith the periphcry of the bobbin. The nut k is arranged frame of the machine, the winding spindle b,

c and' to be straddled by the two legs of the traving of the nut along the "rod (Z causes the traverse-guide 0 to advance longitudinally of the winding spindle. The turning of the nut is is effected through the contact of the wheel Z with the bobbin, which occurs each time the traverse-guide reaches the extreme of traverse nearest the frame A, or, in other words, each time the ide reaches the base of the cone on which 1t is winding, at the periphery of the cop. The winding is started on the conical face of the bobbin or tube n, and the cop grows by longitudinal extension, caused by the feeding ;ofthe guide along its traverse-rod as the wheel I is turned at each com lete reciprocation. The thread-guide 0 is he d in the holder m, which is hinged on the traverse-rod d, as previously explained, and through this arrangement, the guide 0 is adapted to oscil- 'late, to allow it to ride up the incline -of the nose of the cop. To provide for keeping the thread-guide 0 constantly in con tact with the surface on which'the winding is done, a pressure frame or bearing bar 1) is provided. The bar p is formed with two legs 'gg, which have bearings on the traverse-rod d, vthus hinging it on the same axis as the thread-guide holder m. The bearing bar p does not beardirectly on the thread-guide, but between the guide-holder and bar is interposed a wire bail 8, having a guiding wire t whichis formed to correspond to the angle of the nose of the cop. A lug u on the. over the wire t, so that the guide 0 follows the form of the wire in its traverse. The bail 8 slides in grooves along the bar p, as the ide travels along the traverse-rod (Z. By t is arrangement, the weight of the bar 0 provides pressure on the thread-gulde, to

co the latter firmly in contact with the sur ace of the cop, the function of the bail s being to allow the guide to move toward and away from the axis of the cop without causing the bar to rise and fall therewith. All of this wit the purpose and benefit thereof is fully explained in the pending application above referred to.

The starting and stopping of the machine is controlled through a rock-shaft or rod 1;, arranged in bearings 'w and m, and manually operated to start the machine, by the handle 2, see Fig. 2. The rod '0 extends through the frame of the machine and is operated by a spring 2 to control the clutch levers, not here shown in detail. On the outside of the machine the rod carries an arm 3, formed at its outer end with a detent 4, adapted to engage the corresponding detent 5 on the lever 6. The lever 6 is pivoted on the frame A at 7 and is weighted at 8 tokeep it normally in engagement with the arm 3. At the top of the lever 6, is hinged a pawl or stoppin -lever 9, formed of wire and having an 0 set 9 adapted to be engaged by projections 10 on the collar 11,

guide-holder m hooks up which is fast on the spindle b and rotates therewith in the direction indicated by its arrow, Fig. 2. The stopping-lever 9 is limited in its downward movement by an element 12, on which it rests, the element 12 being part of, or fastened on, a rod 13 which extends parallel with the rod '0, The rod 13 carries at its outer end a lever 14 which is adjustable along the rod and adapted to be engaged by the thread-guide holder m, when the latter reaches the end of the tube on which the cop is being Wound. The engagement of the guide-holder with the lever 14 tilts the latter and rocks the rod 13 to throw the stopping-lever 9, into engagement with the collar 11, to release the detents and stop the machine.

The stopping-lever '9 is also adapted to be thrown into engagement with the collar 11, by the action of the endstop-bar 15, tov be later described.

' To apply the normal degree of tension to the thread or yarn, I provide a usual tension device, such, for instance, as that shown at B in the drawings. This consists of two hinged plates 17 and 18, adapted to be pressed toward each other by the action of weights 18 or other means, and formed with corrugations on their faces. The yarn y is led between the tension plates and is given.

a sinuous course as it draws across the corrugatlons, which creates resistance to its draft and thereby applles tension.

Extending downward from the frame A and projecting outward toward the tension device B, is a bracket C which carries the end-stop-bar and, also, the tension varying mechanism now described. v

Projecting through the bracket C is a pin 19, which forms. a pivotfor the endstop-bar 15, the latter being preferably of wire, formed with a helical coil 20, which serves as a bearing on the pin 19. An arm 21 of the end-stop-bar extends upward from one end of the coil 20 and is bent back at 22, to form an incline (underneath, and adapted to contact with, the stopping-lever 9. -When the arm 21 is tilted or rocked away from the frame A, the inclined end 22 acts as a wedge to raise the stopping-lever 9 into positionto be engaged by the collar 11, to move it to sto the machine. Extending from the opposite end of the coil 20 is an arm 23 formed at its end with a loop 24 which provides two bearing-bars, 25 and 26,

for the thread. The loop portion of the wire is preferably of V-shape, bent down ward to form a guide 27 for the yarn, to

direct it under the two bars 25 and 26,'whenthe machine is threaded up. The end of the bracket C is provided'with an opening. 28,

having jaws or 'lugs 29 and 30, between.

which the bar 26 is located. These lugs serve as stops to limit the movement of the end-stop-lever '15. The yarn 4 supports the arm 23 in its raised position, ins-shown by causes it to'drop, thus tilting the arm 21 and raising the stopping-lever or pawl 9, to stop the machine, as hertofore explained.

The auxiliary tension device for automatically augmenting the normal tension, when the yarn is being wound on the apex of the cone, comprises essentially, a moving element, preferably a rocking or oscillating lever 31, to which, motion is im arted from any going member of the machine. I have shown the lever 31 as preferably oscillated through connections with the transverse-rod d, because this method provides for timing the movement of the lever 31 synchronously with the transverse of the thread-guide:

The lever 31 is preferably formed of wire and is provided with a bearing-bar 32, for the yarn, which is arranged to be normally in a position intermediate the two bars 25 and 26 and approximately in line therewith. The yarn "y, as it leaves the tensions B, draws under'the bar 25, then over the bar 32, and under the bar 26. It will be seen that by moving the bar 32 upward, away from the bars 25 and 26, an angular course is imparted to the yarn, so that it makes sharp bends around the bars, and it will be obvious that the resistance to its draft will be increased with the distance of the bar 32 from the bars 25 and 26.

The bearing-bar 32 is bent down into a loop 33, formed with an inclined portion 34 which acts as a guide in threading the yarn up over the bar 32. With the lever 31 in the position shown by dash lines, Fig. 1, when the yarn is drawn up under the 00p 24, it rides up the incline 34, over the to of the bar 32', in position to be deflecte from its straight course by the upward movement of the bar. If the machine happens to stop with the bar 32 in its raised position, as shown by full lines, Fig. 1, it is only necessary to thread the yarn up under the bars 25 and 26 and lead it up through the thread-guide 0 to the winding spindle; and when the machine is started the bar 32 will descend and automatically pick up the yarn, the incline 34 acting to force the yarn outward, around the loop 33 and up over the bar 32. The lever 31 is pivoted at 36, on the bracket C, in the following described manner: The arm 37 of the lever extends in a loop 38 and at the endof this'loo the wire is bent upward and coiled aroun the main wire with its end 39 extending at right angles and adapted to project through a bore inthe bracket C. To retain the lever 31 in its bearing, a lug 40 on the bracket 0 is provided with a slot 41, in which the main arm of the lever 31 is adapted to play up and down, but which limits the lateral movement of the wire, see Fig. 3.

The pin 19, besides serving as a bearing for the end-stop-bar 15, also performs a similar function for the rockin lever 43, from which the lever 31 is oscil ated. The lever 43, is preferably formed of wire and has two arms 44 and 45, connected by the horizontal wire 46, which is coiled at 47 and 48 to form bearings surrounding the pin 19, see Figsf3 and 5. The arm 44 extends upward from the coil 47 to the transverse-rod (Z, to which it is connected by the member 49. The arm 44 is arched at 50 to clear the stopping mechanism. The member 49 is preferably of wire, coiled to form a thimble surrounding the end of the arm 44, with a hook 51 adapted to engage a borein the rod d. The thimble 49 is adapted to slide on the arm 44 and the latter rides up and down within the thimble to provide for the areal movement of the end of the arm as it oscillates back and forth.

The arm 45 of the lever 43 takes the form of a loop, corresponding to, and arranged alongside, the loop 38 of the lever 31. To connect the lever 43 with the lever 31, I provide a stud or pintle 52, which has a support slidable on the arm 45, and projects through the loop 38. The stud 52 is preferably ormed of wire, close coiled to a diameter adapted to enter the loop 38, and extending down around the lower wire of the arm45 and coiled a ain at 53 to surround the upper wire, endiof the coil 53 the wire is bent outward and then back across the top of the upper wire of the arm 45, the end 54 acting as a spring detent adapted to engage notches 55 in the arm 45. The stud 52 can he slid along the arm 45, toward or away from the pivot point of the lever 43, so that the throw of the stud, when the lever oscillates, may be varied to regulate the degree of action of the lever 31. The purpose of this arrangement" is to provide for regulating the amount of extra tension applied to the yarn as it is {ground near the apex of the cone of the bobm moie tension than others to make t e cop stable.

- The pin I9 is secured in the bracket C in the ingenious and novel manner now escribed: As before mentioned, it projects through a bore in the bracket and one end is bent around in the hook 57, the end of which is beveled ofi' and adapted to fit a V-shaped notch 58 in a lug. 59 on said bracket. The hook 57 is so formed that its end must be sprung into the notch, against the spring tension of the wire, and when so engaged, it is firmly held, laterally and longitudinally, against accidental displacement. To remove the pin, it is only necessary to apply sutficient force to turn it in its bearin to overcome the frictional engagement 0 its end with the notch 58. I

It will be seen that the coil 48 of the lever see Figs. 1- and 7. From the 43 bears againsta hub or boss 60 on the bracket C, which limits its lateral movement in one direction and movement in the opposite direction is limited by the coil 20 0 the end-stop-barl5, which, in turn, bears against the boss 61 on the bracket C. The

coil 47 retains the end-stop-bar in position on the pin 19 and the coil 20 locates the I cheaply, and, particularly because they may be made much lighter than castings, yethave the required strength.

The operation of the device is as follows: After determinin the amount of additional tension to be ap ied to the yarn as it winds on the oint o the bobbin, the stud '52 is adjuste on the arm 45 of the lever 43, to-

. ward or away froin the fulcrum of said lever v.of the stud, as the case may require, when to give a greater or less range of movement the lever 43 is rocked. The detent 54 will spring into an appropriate notch on the arm 45 to retain the stud in its adjusted position.

.The yarn y is thenled up between the plates 17 and 18 of the tension device B, under the thread bearing bars 25 and 26, and thence to its seat in thethread-guide 0. If the lever 31 is in position with the bearing bar 32 at the lowest point of its throw, the yarn will be guided by the incline 34 to ride up over the bar 32, but, in any event, the d0wnward movement of the incline 34 acts with the same eflect and the yarn is automatically picked up to lead across the top of the bar 32. When the winding is started, the reciprocatory movement of the traverse-rod d is transmit-ted through the lever 43 to oscillate the lever 31, the rocking of the latter being so timed that the bar 32 is raised to its highest point each time the thread-guide 0 reaches the apex of the cone on which the winding 1s being done. As the bar '32 rises, it deflects the course of the yarn froma straight line to a triangular course having sharp bends, which adds increased resistance to its draft. .It will, therefore, be seen, that as the thread-guide winds down toward the point of the bobbin, the tension on the yarn is gradually increased to bin; and as the guide 0 traverses back in the opposite direction, up on to-the base of the cone, the tension is decreased, to give a explained.

lVithout limiting myself to the precise form andarrangement of parts shown, what I claim is:

ive the maximum amount-at the smallest dlameter of the bobto rock the latter.

1. The combination in a tension controlling device for a winding machine with a winding spindle, and traverse-guide adapted to oscillate toward and away from the spindle, of means to apply tension to the thread and means operating s nchronously with the movement 0 the gui e to vary the tension on the thread at each oscillation thereof.

2. The combination with a winding inachine having a rotating spindle, and a reciprocating threaduide adapted to oscillate toward and away rom the spindle at each reciprocation, of tension means for applying a normal degree of tension tothe thread, and an auxiliary tension device adapted to ang ment the normal tension at each movement of the guide toward the-spindle and to remove the added tension with each movement of the guide away from the spindle.

3. The combination with a winding machine having a rotating s indle, a reciprocating traverse bar, an a thread guide mounted on the traverse-bar and adapted to I oscillate toward and away from the spindle, of tension applying means and means controlled by the reci rocation of the traversebar to automatica ly vary the tension applied to the thread.

4. The combination with a winding machine havin a rotating spindle and a reciprocating t read-guide, of an end-stop-bar having bearin -bars under which the thread draws, an osci lating lever having a bearingbar adapted to be moved across the pathof the thread as it leads under the end-stop- 100 bar, and means to connect the lever with the thread-guide to cauSeit to oscillate.

5. The combination with a windin machine having a reciprocating traversea1", a rotating spindle and stop-mechanism to control the operation of the traverse-bar and spindle, of an end-stop-bar supported by the running thread and adapted to engage the stopping-mechanism when the thread breaks, a lever formed with a thread bearing-bar adapted to be oscillated across the path of' the thread, and means to oscillate the lever from the machine.

. 6. The combination with a windin machine having a reciprocating traversear, a rotating spindle, and stopping devices therefor, ofa; pivoted end-stop-bar supported by the running thread and adapted to drop to engage the stopping devices, an oscillating lever with a thread bearin -bar adapted to 12 bear on the threadas it lea s under the endstop-bar, and a second lever oscillated from the traverse-bar and engaging the first lever 7. The combination with a winding machine having a reciprocating member d, of a lever 43 having arms 44 and 45 with the arm 44 connected to the member (1, a lever 31 having one arm formed with a bearlng- I bar 32 for the thread and an arm 37 formed 130 with a loop 38, and a stud 52 adjustable along the arm 45 of the lever 43 and adapted to engage the loop of the lever 31.

8. In a tension controlling device the combination with a bracket C having a lug 40 with a slot 41, of a lever 31 formed of wire and having an end 39, bent at right-angles to the lever and extending through the bracket C for a bearing, with the maln wire of said lever arranged in the slot 41 to retain the lever from lateral displacement.

9. As an article of manufacture, a lever 31 formed of wire, with one arm bent at right-angles to form the bearing-bar 32, having the downturned loop 33 terminating in the inclined portion 34, and the opposite arm formed with a loop 38, having parallel sides extending in the same plane, and the end of the lodp coiled around the main portion and extending at right angles to the plane of the loop in the end 39.

10. As'an article of manufacture, a thimble 49 for tension devices, formed of wire helically coiled to provide a socket or hearing and with one end of the wire extending in the plane of the axis of the coil and bent to form the hook 51.

11. As an article of manufacture, a stud 52 formed of wire, helically coiled with one end extending downward in a loop and coiled again at 53 to form a bushing with its axis at right-angles to the axis of the coil 52, and with the end of the coil 53 extendin outwardand back across the axis of the C011 53 to form a spring detent 54.

12. The combination with the lever 43 having an arm 45 formed with a loop extending in parallel sides, one above the other in the same plane, with notches 55 on the upper side, of a stud 52 formed of wire helica y coiled and extending down around the lower side of the loop and coiled at 53 to surround the upper side of the loop, with the end'of the wire extending laterally from the coil 53 and bent back to dorm the spring detent 54, adapted to engage the notches 55.

13. The combination with a bracket G,

I having a lug 59 with a V-shaped notch 58,

of a pm 19 projecting through a bore in the bracket and extendlng in a loop 57, bent in the form of ahook with its end adapted to be sprung into the notch 58, to retain the pin laterally and longitudinally against isplacement.

14. As an article of manufacture, an endstop-bar 15, formed of wire helically coiled at 20 for a bearin with the wire extending from one end of t e coil in the vertical arm 21, bent at 22 to form an inclined portion, and a second arm 23 extending from the opposite end of the coil 20, bent at right an les to form the thread bearing-bar 25 and extending downward in a loop 24 with an inclined portion 27, then upward and back toward the arm 23 to form a second thread bearing-bar 26 parallel with the bar 25.

15. As] an article of manufacture, a lever 43 formed of wire coiled at 47 and 48 to form alining hub bearings, the coils conneeted by a U- haped loop 46 of the wire,the

' outer end of the bearing 47 extending at right-angles to the axis of the coils in a vertical arm 44, and the opposite end of the coil 48 extending at approximately rightangles to the arm 44 in an arm 45 formed in a loop with parallel sides in the same plane.

16. In a tension controlling device, the combination with a bracket C, of a pin 19 fast in the bracket, an end-stop-bar formed of wire helically coiled at 20 to form a bearing on the pin on one side of the bracket and extendin in the arms 21 and 23, a lever 43 formed of wire coiled at 47 to surround the pin 19 outside of the coil 20 and extending in a U-shaped loop 46 to straddle the coil 20, with a coil 48 surrounding the pin 19 on the opposite side of the bracket, and an arm 45 extending from the coil 48.

17. The combination with a bracket C formed at its end with an opening 28 having jaws 29 and 30, of an end-stop-bar 15 pivoted on the bracket and formed with a laterally extending bar 26 arranged between the jaws 29 and 30 to limit the movement of the end-stop-bar.

In testimony whereof I afiix my signature in presence 0 two witnesses.

SIMON W. WARDWELL. Witnesses CHAS. A. EDDY, A RTHUR I. HARVEY. 

